Featured
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Matters Arising |
Replying to: Probing supernovae and kicks in post-supernova binaries
- Noel D. Richardson
- & Jan J. Eldridge
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Matters Arising |
Probing supernovae and kicks in post-supernova binaries
- C. Larsen
- , H. C. G. Larsen
- & T. M. Tauris
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Article |
A shock flash breaking out of a dusty red supergiant
A type II supernova (SN 2023ixf) was observed in the galaxy M101 at a distance of 6.85 ± 0.15 Mpc, at about 1.0 h after the explosion.
- Gaici Li
- , Maokai Hu
- & Eliot Herman
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Article
| Open Access
Phosphorus-bearing molecules PO and PN at the edge of the Galaxy
We report the presence of gas-phase phosphorous at the edge of the Galaxy and suggest it is produced by neutron-capture processes in lower mass asymptotic giant branch stars.
- L. A. Koelemay
- , K. R. Gold
- & L. M. Ziurys
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Article |
A rotating white dwarf shows different compositions on its opposite faces
The Zwicky Transient Facility has observed a transitioning white dwarf with two faces, with one side of its atmosphere dominated by hydrogen and the other by helium.
- Ilaria Caiazzo
- , Kevin B. Burdge
- & Dave I. Sahman
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Article |
A close-in giant planet escapes engulfment by its star
The giant planet 8 Ursae Minoris b seems to have avoided engulfment by its giant host star through a stellar merger that either affected the evolution of the host star or produced 8 Ursae Minoris b as a second-generation planet.
- Marc Hon
- , Daniel Huber
- & Lauren M. Weiss
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Article
| Open Access
A binary pulsar in a 53-minute orbit
PSR J1953+1844 (M71E) has an orbital period of 53.3 minutes and a companion with a mass of 0.07 M⊙, making it a bridging object between redbacks and black widows in the evolutionary track.
- Z. Pan
- , J. G. Lu
- & M. Zhu
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Article
| Open Access
A metal-poor star with abundances from a pair-instability supernova
The chemical composition of the Galactic halo star J1010+2358 shows extremely low sodium and cobalt abundances, different from most other halo stars, indicative of a very metal-poor star being seeded with elements from a pair-instability supernova.
- Qian-Fan Xing
- , Gang Zhao
- & Jing-Kun Zhao
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Article
| Open Access
A massive quiescent galaxy at redshift 4.658
GS-9209 is spectroscopically confirmed as a massive quiescent galaxy at a redshift of 4.658, showing that massive galaxy formation and quenching were already well underway within the first billion years of cosmic history.
- Adam C. Carnall
- , Ross J. McLure
- & Sam Walker
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Article
| Open Access
A helium-burning white dwarf binary as a supersoft X-ray source
Analysis of a supersoft X-ray source shows an accretion disk whose optical spectrum is completely dominated by helium, suggesting that it is a white dwarf binary accreting helium from a hydrogen-free donor star.
- J. Greiner
- , C. Maitra
- & R. Vanderspek
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Article |
A high-mass X-ray binary descended from an ultra-stripped supernova
A recently discovered high-mass X-ray binary has an evolutionary history showing the neutron star component formed during an ultra-stripped supernova, and has orbital elements that should allow for forming a binary neutron star in the future.
- Noel D. Richardson
- , Clarissa M. Pavao
- & Jeremy Hare
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Article |
Shock cooling of a red-supergiant supernova at redshift 3 in lensed images
The early stages of a lensed supernova at redshift 3 are found in images taken by the Hubble Space Telescope, with observations beginning from around 5.8 hours after the explosion.
- Wenlei Chen
- , Patrick L. Kelly
- & Adi Zitrin
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Article |
Measurement of 19F(p, γ)20Ne reaction suggests CNO breakout in first stars
Observation of a new resonance in the 19-fluorine to 20-neon thermonuclear reaction at the China JinPing Underground Laboratory (over 2 km below ground) may provide clues to observed discrepancies in calcium production in the evolution of the first stars.
- Liyong Zhang
- , Jianjun He
- & Weiping Liu
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Article |
Magnetic fields of 30 to 100 kG in the cores of red giant stars
Magnetic fields of 30 to 100 kilogauss are measured in the cores of three giant red stars observed with the Kepler satellite.
- Gang Li
- , Sébastien Deheuvels
- & François Lignières
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Article |
A dense 0.1-solar-mass star in a 51-minute-orbital-period eclipsing binary
A 51-minute-orbital-period, fully eclipsing binary system consisting of a star with a comparable temperature to that of the Sun but a 100 times greater density, accreting onto a white dwarf is reported.
- Kevin B. Burdge
- , Kareem El-Badry
- & Thomas A. Prince
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Article |
Binarity of a protostar affects the evolution of the disk and planets
Binarity and multiplicity in general strongly affect the properties of emerging stars, as well as the physical and chemical structures of protoplanetary disks and therefore potentially any emerging planetary systems.
- Jes K. Jørgensen
- , Rajika L. Kuruwita
- & Edwin A. Bergin
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Article |
r-Process elements from magnetorotational hypernovae
Observations of an extremely metal-poor star suggest that rapidly rotating massive stars with large magnetic fields were a source of r-process elements in the early Universe.
- D. Yong
- , C. Kobayashi
- & B. P. Schmidt
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Article |
A highly magnetized and rapidly rotating white dwarf as small as the Moon
A binary star merger has produced a white dwarf with a spin period of under 7 minutes, a magnetic field of 600 to 900 million gauss and a radius only slightly larger than that of our Moon.
- Ilaria Caiazzo
- , Kevin B. Burdge
- & Maayane T. Soumagnac
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Article |
A dusty veil shading Betelgeuse during its Great Dimming
The southern hemisphere of Betelgeuse during its Great Dimming was an order of magnitude darker than usual, owing to a cool patch on the photosphere and associated dust formation.
- M. Montargès
- , E. Cannon
- & W. Danchi
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Article |
High-entropy ejecta plumes in Cassiopeia A from neutrino-driven convection
The abundances of stable Ti and Cr relative to Fe observed in the Cassiopeia A core-collapse supernova remnant reveal that Ti and Cr must have formed in neutrino-driven plumes that helped to drive the explosion.
- Toshiki Sato
- , Keiichi Maeda
- & John P. Hughes
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Review Article |
Core-collapse supernova explosion theory
The factors affecting how and why supernovae occur are discussed, and the current status of core-collapse supernova explosion theory is reviewed.
- A. Burrows
- & D. Vartanyan
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Article |
Experimental evidence of neutrinos produced in the CNO fusion cycle in the Sun
Direct experimental evidence of the carbon–nitrogen–oxygen fusion cycle in the Sun is provided by the detection of neutrinos emitted during this process.
- M. Agostini
- , K. Altenmüller
- & G. Zuzel
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Article |
A blue ring nebula from a stellar merger several thousand years ago
Observations and stellar evolution models of a blue ring nebula and its central star (TYC 2597-735-1) suggest that the remnant star merged with a lower-mass companion several thousand years ago.
- Keri Hoadley
- , D. Christopher Martin
- & Bradley E. Schaefer
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Article |
A giant planet candidate transiting a white dwarf
A giant planet candidate roughly the size of Jupiter but more than 14 times as massive is observed by TESS and other instruments to be transiting the white dwarf star WD 1856+534.
- Andrew Vanderburg
- , Saul A. Rappaport
- & Liang Yu
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Article |
Very regular high-frequency pulsation modes in young intermediate-mass stars
The pulsation spectra of intermediate-mass stars (so-called δ Scuti stars) have been challenging to analyse, but new observations of 60 such stars reveal remarkably regular sequences of high-frequency pulsation modes.
- Timothy R. Bedding
- , Simon J. Murphy
- & Roland K. Vanderspek
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Matters Arising |
Reply to: On the signature of a 70-solar-mass black hole in LB-1
- Jifeng Liu
- , Roberto Soria
- & Hailong Yuan
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Matters Arising |
On the signature of a 70-solar-mass black hole in LB-1
- Michael Abdul-Masih
- , Gareth Banyard
- & Hugues Sana
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Article |
A wide star–black-hole binary system from radial-velocity measurements
Radial-velocity measurements of a Galactic B-type star show a dark companion that seems to be a black hole of about 68 solar masses, in a widely spaced binary system.
- Jifeng Liu
- , Haotong Zhang
- & Xiangqun Cui
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Letter |
Stellar mergers as the origin of magnetic massive stars
Simulated mergers of two massive stars provide a solution to the long-standing puzzle of the origin of strong magnetic fields in a subset of massive stars.
- Fabian R. N. Schneider
- , Sebastian T. Ohlmann
- & Volker Springel
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Letter |
General relativistic orbital decay in a seven-minute-orbital-period eclipsing binary system
Observations of an eclipsing double-white-dwarf binary with an orbital period of 6.91 minutes that is decaying as predicted by general relativity are reported; once launched, the Laser Interferometer Space Antenna (LISA) should swiftly detect this binary.
- Kevin B. Burdge
- , Michael W. Coughlin
- & Thomas A. Prince
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Letter |
A distance to the Large Magellanic Cloud that is precise to one per cent
A new calibration of the surface brightness–colour relation of eclipsing binary stars gives a distance to the Large Magellanic Cloud that is precise to one per cent.
- G. Pietrzyński
- , D. Graczyk
- & W. Narloch
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Letter |
Core crystallization and pile-up in the cooling sequence of evolving white dwarfs
Photometry and parallax data from the Gaia satellite provide direct observational evidence of a theoretically predicted pile-up in the cooling sequence of white dwarfs, which is associated with core crystallization.
- Pier-Emmanuel Tremblay
- , Gilles Fontaine
- & Tim Cunningham
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Letter |
Outbursts of luminous blue variable stars from variations in the helium opacity
Three-dimensional simulations of the convective envelopes of massive stars suggest that it is the helium opacity that controls outbursts in luminous blue variable stars.
- Yan-Fei Jiang
- , Matteo Cantiello
- & James Stone
Buoyant crystals halt the cooling of white dwarf stars